Family
- grandfather : Abandoned his wife and their four children in pursuit of his career
- father Alfred Stewart: A Regimental Sergeant Major in the British Army who served with the King's Own Yorkshire Light Infantry
- mother Gladys Stewart:
- brothers : Has two; both are married and have seven children between them
- son Daniel Freedom Stewart: Born c. 1968; mother, Sheila Falconer
- daughter Sophie Alexandra Falconer Stewart: Born c. 1973; mother, Sheila Falconer
Companions
- Meredith Baer: were engaged; no longer together
- wife Wendy Neuss: born c. 1961; served as co-producer on "Star Trek: The Next Generation"; later worked in a similar capacity on "Star Trek: Voyager"; announced engagement in September 1997; married on August 25, 2000 in L.A.
- Companion Lisa Dillon: Met co-starring in a production of "The Master Builder" in 2003; currently living together
